From nobody Sun Feb 8 22:05:36 2026 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 653361B4153; Mon, 10 Feb 2025 07:03:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.19 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739170985; cv=none; b=HBz3BUpCGvZibapVr9/5GiaZcJB7sCLXIgqWQImjANRp+UBZq+aE5mMuI48h6cd3BlHiko52Ry0RY1kNyHHOxSRTl5p7WkVQFW6CkqrP8H8gytDuqH8sol6icUbJEB2NSYKzNBZk+X//XZXqmj2NIjhofVnIrmvL6EMEIpWKQ8A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739170985; c=relaxed/simple; bh=2Msp7YoBmanu425m0MXmljH1/c1Or8M2lkzZSA8x+50=; h=From:To:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=FMD+g+n5PuhQ8OTvueR2uPa/vZdhZg2lnsYdVb6/lpMjMBtvIBf6Y1NormDadq+CZJL9rvd/9Ufx13uo1N7eifqgJCbY+qByT8ssZWmPDpKKwpErl047aZhB6W/VxEbVhx4XDU7vWOJU352Tkn3d0hyNVP7MQGKyJ6MRFPSLX1s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=G0/TsHJy; arc=none smtp.client-ip=192.198.163.19 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="G0/TsHJy" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1739170983; x=1770706983; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=2Msp7YoBmanu425m0MXmljH1/c1Or8M2lkzZSA8x+50=; b=G0/TsHJySrohrTmyl6/1JIgMvvBzqUrmkXli2mawgd5ejPA38v7qFku5 lNM50EktSWgVtYl8D+WkE3r6b59kiROjO9z3HZL1Mxc+BN6lxGw3jr0IR UiEGhWZdxuQdItkBtEsf/pRabOu0qRHHec5LoiCTi+c6jv/IEiBSB+/PN txV0ntSuSsxEMGKsAneZnARPEPfqNQzAnWB4leJs82qK4WqyhWjj4Esa4 f34fuJtn1oNwNMJIUqrP0Jf9AfdkbA/qQUjsAx5S/QsmBKVGjFLBOonIK i8bC00fl8K0kFk0/kfUcnOYifztPR0H3G/2h0spZ3dGk91H+x1vhj9VB9 w==; X-CSE-ConnectionGUID: UJbEMbRxTgCIIySK1mbXXw== X-CSE-MsgGUID: 3N9G3gUvQmGZmIW7RZWWIg== X-IronPort-AV: E=McAfee;i="6700,10204,11340"; a="38937972" X-IronPort-AV: E=Sophos;i="6.13,273,1732608000"; d="scan'208";a="38937972" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Feb 2025 23:03:00 -0800 X-CSE-ConnectionGUID: 8BDzFnh3RSGCC9nTZq3wzw== X-CSE-MsgGUID: ZcY9ySM3RlORd60VJlBQOA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.13,273,1732608000"; d="scan'208";a="112622580" Received: from mohdfai2-ilbpg12-1.png.intel.com ([10.88.227.73]) by fmviesa010.fm.intel.com with ESMTP; 09 Feb 2025 23:02:44 -0800 From: Faizal Rahim To: Tony Nguyen , Przemek Kitszel , Andrew Lunn , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Maxime Coquelin , Alexandre Torgue , Simon Horman , Russell King , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , Furong Xu <0x1207@gmail.com>, Russell King , Vladimir Oltean , Serge Semin , Xiaolei Wang , Suraj Jaiswal , Kory Maincent , Gal Pressman , Jesper Nilsson , Andrew Halaney , Choong Yong Liang , Faizal Rahim , Kunihiko Hayashi , Vinicius Costa Gomes , intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, bpf@vger.kernel.org Subject: [PATCH iwl-next v4 4/9] igc: Set the RX packet buffer size for TSN mode Date: Mon, 10 Feb 2025 02:02:02 -0500 Message-Id: <20250210070207.2615418-5-faizal.abdul.rahim@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250210070207.2615418-1-faizal.abdul.rahim@linux.intel.com> References: <20250210070207.2615418-1-faizal.abdul.rahim@linux.intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" In preparation for supporting frame preemption, when entering TSN mode set the receive packet buffer to 16KB for the Express MAC, 16KB for the Preemptible MAC and 2KB for the BMC, according to the datasheet section 7.1.3.2. Co-developed-by: Vinicius Costa Gomes Signed-off-by: Vinicius Costa Gomes Signed-off-by: Faizal Rahim --- drivers/net/ethernet/intel/igc/igc_defines.h | 3 +++ drivers/net/ethernet/intel/igc/igc_tsn.c | 13 +++++++++++-- 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/igc/igc_defines.h b/drivers/net/eth= ernet/intel/igc/igc_defines.h index 516ef70c98e9..b19ac6f30dac 100644 --- a/drivers/net/ethernet/intel/igc/igc_defines.h +++ b/drivers/net/ethernet/intel/igc/igc_defines.h @@ -402,6 +402,9 @@ =20 /* 7KB bytes buffer for each tx queue (total 4 queues) + 4KB for BMC*/ #define IGC_TXPBSIZE_TSN 0x041c71c7 +/* 15KB for EXP + 15KB for BE + 2KB for BMC */ +#define IGC_RXPBSIZE_TSN 0x0000f08f +#define IGC_RXPBSIZE_SIZE_MASK 0x0001FFFF =20 #define IGC_DTXMXPKTSZ_TSN 0x19 /* 1600 bytes of max TX DMA packet size */ #define IGC_DTXMXPKTSZ_DEFAULT 0x98 /* 9728-byte Jumbo frames */ diff --git a/drivers/net/ethernet/intel/igc/igc_tsn.c b/drivers/net/etherne= t/intel/igc/igc_tsn.c index 1e44374ca1ff..f0213cfce07d 100644 --- a/drivers/net/ethernet/intel/igc/igc_tsn.c +++ b/drivers/net/ethernet/intel/igc/igc_tsn.c @@ -132,13 +132,17 @@ static int igc_tsn_disable_offload(struct igc_adapter= *adapter) { u16 queue_per_tc[4] =3D { 3, 2, 1, 0 }; struct igc_hw *hw =3D &adapter->hw; - u32 tqavctrl; + u32 tqavctrl, rxpbs; int i; =20 wr32(IGC_GTXOFFSET, 0); wr32(IGC_TXPBS, I225_TXPBSIZE_DEFAULT); wr32(IGC_DTXMXPKTSZ, IGC_DTXMXPKTSZ_DEFAULT); =20 + rxpbs =3D rd32(IGC_RXPBS) & ~IGC_RXPBSIZE_SIZE_MASK; + rxpbs |=3D I225_RXPBSIZE_DEFAULT; + wr32(IGC_RXPBS, rxpbs); + if (igc_is_device_id_i226(hw)) igc_tsn_restore_retx_default(adapter); =20 @@ -194,7 +198,7 @@ static int igc_tsn_enable_offload(struct igc_adapter *a= dapter) { struct igc_hw *hw =3D &adapter->hw; u32 tqavctrl, baset_l, baset_h; - u32 sec, nsec, cycle; + u32 sec, nsec, cycle, rxpbs; ktime_t base_time, systim; int i; =20 @@ -202,6 +206,11 @@ static int igc_tsn_enable_offload(struct igc_adapter *= adapter) wr32(IGC_DTXMXPKTSZ, IGC_DTXMXPKTSZ_TSN); wr32(IGC_TXPBS, IGC_TXPBSIZE_TSN); =20 + rxpbs =3D rd32(IGC_RXPBS) & ~IGC_RXPBSIZE_SIZE_MASK; + rxpbs |=3D IGC_RXPBSIZE_TSN; + + wr32(IGC_RXPBS, rxpbs); + if (igc_is_device_id_i226(hw)) igc_tsn_set_retx_qbvfullthreshold(adapter); =20 --=20 2.34.1